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Re: Dryer is displaying AF
I got this from the other site.
The code AF indicates that the control senses a restricted air flow.
To clear the code, press STOP once and the estimated time remaining
countdown will return to the display. The AF code will continue to
appear with each cycle until the low airflow condition is resolved. Try the following troubleshooting to resolve the air flow problem:
Clean the lint screen.
Check at the outside of the home to make sure that the vent exhaust hood is not blocked.
Check the flexible vent connection behind your dryer. Make sure that it is not kinked or clogged.
can disconnect the flexible vent and start a cycle with the dryer
venting directly into your laundry room. If the AF code does not
appear, this will verify an exhaust vent duct problem. Otherwise you
may have a component failure.
Have your home dryer venting run cleaned professionally.
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It is due to low air flow (AF),clean the vent tube out. The easiest thing to do is disconnect the vent and run the dryer, the AF will not be displayed, you can take the back top panel off an on the inside is a sheet with codes and how to take apart your dryer, as you have lint inside the dryer as well and should be cleaned out at least twice a year, varies on usage. Hope this helps Tim
I've seen the AF code twice now on my Whirlpool Cabriolet Dryer (wed6400sw1). The first time, we thought it stood for "Auto Fluff", a cycle to keep the clothes wrinkle free...We soon realized the dryer was getting a lot hotter than it ever did before and until I checked the vent stack from the roof, I had no idea that the pipe was blocked with a build-up of lint. I cleaned the pipe from top to bottom by taking it apart wherever I could using a vacuum and every hose extension I could get my hands on. I duct taped these together so I didn't drop it somewhere that I couldn't reach!
The second time we saw the AF code was this weekend. First, I verified the vent pipe was not clogged again. (a good quick test for this is to disconnect it from the back of the dryer and run it unconnected to see if the AF code fires) After some online research, I started taking it apart the back to maybe replace the thermistor or the thermal fuse shown above.
I noticed an odd little piece of ceramic tubing had fallen down to the base of the dryer pan. So I decided to take the heater core apart to have a look. Sure enough, I found my problem. My dryer has two separate groups of springy looking heater wire. You can see that part here as well as the little tube I found. http://www.appliancepartspros.com/Appliance-Parts/whirlpool-element-item-number-ap3953732.aspx It turns out that ceramic tube is an insulator allowing for the two heating elements to exist without touching since they are both powered from the same starting wire point.
Well, my AF code (which is really just telling you the dryer is getting too hot) was being created due to a broken wire which caused the two units to fuse together. It must have been getting really hot. It also had welded itself to the metal backing structure.
I carefully removed the broken wires from the heater element and reassembled to test. Sure enough, it works good again and no AF code, but I bet it doesn't heat as much since I removed one half of the element. I'm going to pick up a replacement heater element tomorrow from the local parts store to restore it like new.
I checked all the obvious things posted throughout the internet about this code on my 5 month old WED7800XL and none of them were the problem. What I found on my dryer was the belt that drives the fan had come off. After further inspection I also noticed that the pulley on the top of the fan was missing. After removing the front panel from the dryer I found the pulley, reinstalled it and the belt, the removed panels and it was fixed.
Also FYI, underneath the electronic panel there is a service manual for the dryer.
AF is an error that will flash if a restricted air flow is sensed by the dryer control. If three consecutive cycles have low airflow the control will flash the AF error.
The AF error code can be cleared by pressing the Drying Temp pad for 5 seconds while in stand-by mode. AF will flash in the display for 1 second then "on" will appear in the display. If you press Drying Temp again and "of" will appear in the display indicating the AF error display has been turned off. Try this procedure and see if the "of" error goes away. If the "of" came up in the display by itself then the keypad may be stuck. However After cleaning the dryer's lint screen, ensure that the exterior exhaust hood connected to the dryer is unblocked, ensure that the vent connecting the dryer to the wall is clear and see that the vent is cleaned professionally.
Please get back to us if you have any further query.